The Java Tutorials have been written for JDK 8. Examples and practices described in this page don't take advantage of improvements introduced in later releases.

Export the Public Key Certificate

You now have a signed JAR file sContract.jar. Recipients wanting to use this file will also want to authenticate your signature. To do this, they need the public key that corresponds to the private key you used to generate your signature. You supply your public key by sending them a copy of the certificate that contains your public key. Copy that certificate from the keystore examplestanstore to a file named StanSmith.cer via the following: